[INFO] fetching crate poston 0.7.1...
[INFO] testing poston-0.7.1 against 1.55.0 for beta-1.56-1
[INFO] extracting crate poston 0.7.1 into /workspace/builds/worker-33/source
[INFO] validating manifest of crates.io crate poston 0.7.1 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-33/source/rust-toolchain
[INFO] started tweaking crates.io crate poston 0.7.1
[INFO] finished tweaking crates.io crate poston 0.7.1
[INFO] tweaked toml for crates.io crate poston 0.7.1 written to /workspace/builds/worker-33/source/Cargo.toml
[INFO] crate crates.io crate poston 0.7.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded backoff v0.2.1
[INFO] [stderr]   Downloaded rmp-serde v0.14.3
[INFO] [stderr]   Downloaded hermit-abi v0.1.16
[INFO] [stderr]   Downloaded crossbeam-channel v0.4.2
[INFO] [stderr]   Downloaded syn v1.0.34
[INFO] [stderr]   Downloaded uuid v0.8.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c10da4ba2254174bd5d1b0b24ce514739fd9e292b7a6a7394ce326fa701389a8
[INFO] running `Command { std: "docker" "start" "-a" "c10da4ba2254174bd5d1b0b24ce514739fd9e292b7a6a7394ce326fa701389a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c10da4ba2254174bd5d1b0b24ce514739fd9e292b7a6a7394ce326fa701389a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c10da4ba2254174bd5d1b0b24ce514739fd9e292b7a6a7394ce326fa701389a8", kill_on_drop: false }`
[INFO] [stdout] c10da4ba2254174bd5d1b0b24ce514739fd9e292b7a6a7394ce326fa701389a8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5ecb19eb789cb60c665481bba4a2d610d13bddf44ae864fb29fe35029a245933
[INFO] running `Command { std: "docker" "start" "-a" "5ecb19eb789cb60c665481bba4a2d610d13bddf44ae864fb29fe35029a245933", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.72
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling ppv-lite86 v0.2.8
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling syn v1.0.34
[INFO] [stderr]    Compiling serde v1.0.114
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling serde_derive v1.0.114
[INFO] [stderr]    Compiling instant v0.1.6
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling proc-macro2 v1.0.18
[INFO] [stderr]    Compiling rmp v0.8.9
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling crossbeam-channel v0.4.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling rmp-serde v0.14.3
[INFO] [stderr]    Compiling backoff v0.2.1
[INFO] [stderr]    Compiling uuid v0.8.1
[INFO] [stderr]    Compiling poston v0.7.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 17.58s
[INFO] running `Command { std: "docker" "inspect" "5ecb19eb789cb60c665481bba4a2d610d13bddf44ae864fb29fe35029a245933", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5ecb19eb789cb60c665481bba4a2d610d13bddf44ae864fb29fe35029a245933", kill_on_drop: false }`
[INFO] [stdout] 5ecb19eb789cb60c665481bba4a2d610d13bddf44ae864fb29fe35029a245933
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 945282dcbd6678da9ce7c4b35683766825ea55326e458dfd27d67684392b10bf
[INFO] running `Command { std: "docker" "start" "-a" "945282dcbd6678da9ce7c4b35683766825ea55326e458dfd27d67684392b10bf", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling regex-syntax v0.6.18
[INFO] [stderr]    Compiling termcolor v1.1.0
[INFO] [stderr]    Compiling humantime v1.3.0
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling aho-corasick v0.7.13
[INFO] [stderr]    Compiling regex v1.3.9
[INFO] [stderr]    Compiling env_logger v0.7.1
[INFO] [stderr]    Compiling pretty_env_logger v0.4.0
[INFO] [stderr]    Compiling poston v0.7.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 12.16s
[INFO] running `Command { std: "docker" "inspect" "945282dcbd6678da9ce7c4b35683766825ea55326e458dfd27d67684392b10bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "945282dcbd6678da9ce7c4b35683766825ea55326e458dfd27d67684392b10bf", kill_on_drop: false }`
[INFO] [stdout] 945282dcbd6678da9ce7c4b35683766825ea55326e458dfd27d67684392b10bf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 1a14be55a623093aaf8406217ff0600e92d780f0ebfa27f85106ceb65e6e88f8
[INFO] running `Command { std: "docker" "start" "-a" "1a14be55a623093aaf8406217ff0600e92d780f0ebfa27f85106ceb65e6e88f8", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.14s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/poston-6eb219b7a96522eb)
[INFO] [stdout] 
[INFO] [stdout] running 16 tests
[INFO] [stdout] test buffer::test_pack_record::it_should_make_forward_mode_buffer ... ok
[INFO] [stdout] test buffer::test_take::it_should_move_elements_to_passed_buffer ... ok
[INFO] [stdout] test buffer::unpack_response::it_should_unpack_as_ack_reply ... ok
[INFO] [stdout] test connect::tests::connect ... ok
[INFO] [stdout] test emitter::test::emit_consume_queeu ... ok
[INFO] [stdout] test emitter::test::emit_consume_queue_with_error_stream ... ok
[INFO] [stdout] test time_pack::test::it_should_pack_to_event_time_format ... ok
[INFO] [stdout] test worker::tests::test_handle_message_flushed ... ok
[INFO] [stdout] test connect::tests::reconnect ... ok
[INFO] [stdout] test connect::tests::connect_giveup ... ok
[INFO] [stdout] test queue::tests::test_push_flush ... ok
[INFO] [stdout] test worker::tests::test_handle_message_queued ... ok
[INFO] [stdout] test worker::tests::test_handle_message_terminated ... ok
[INFO] [stdout] test worker::tests::test_start_worker_terminate ... ok
[INFO] [stdout] test worker::tests::worker_create_should_return_err_when_the_connection_open_is_failed ... ok
[INFO] [stdout] test connect::tests::read_and_write ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 16 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.08s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests poston
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "1a14be55a623093aaf8406217ff0600e92d780f0ebfa27f85106ceb65e6e88f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1a14be55a623093aaf8406217ff0600e92d780f0ebfa27f85106ceb65e6e88f8", kill_on_drop: false }`
[INFO] [stdout] 1a14be55a623093aaf8406217ff0600e92d780f0ebfa27f85106ceb65e6e88f8